Dreaming of kidneys means your physical and spiritual being needs a thorough cleansing. If you are feeling ill or undertaking unknown toxins in your diet, the kidneys dream is your warning to re-evaluate the situations and change.
Your current spiritual thoughts may be unclean and clouded with dirty unethical desires. Seek out a confidant or therapist to help ease out the bad thoughts that trouble you.
In a dream, kidneys represent your personality, talents and abilities. When kidneys go wrong in a dream it is not just about one thing or one part of you but it is about your whole personality and your abilities. Also when kidneys are affected by kidney problems or an illness then it is about your overall health condition and possibly if you have any medical conditions that need to be managed then this is a trigger for your dreams about your kidneys.